let fifth form Hurst students keep their phones at night

My school has recently decided to take away our phones at night because we "can't regulate" our time on them, I personally think this is unacceptable as we are in lessons most of the day and breaks are about 15 minutes long. Keeping our phones at night is a fifth form privilege which we have waited two years for. I would also like to say that this is meant to cause no offence to the school as it is a great school and I love it, I do not wish to shine a negative light on the school. I just feel like this is a poor decision.